CustomListView - A flexible list based on ScrollView

peacemaker · Sep 11, 2015

LucaMs said:
Where is the code to add the CustomListView?
(lbl can be a name for a label. edt should be better )

CustomListView is added just by the Designer (Private cv As CustomListView) and all other for the dynamical use is already shown in the code above.
Other work is by checking the checkboxes state:

B4X:

Dim L As List
L.Initialize
For i = 0 To cv.GetSize - 1
    Dim pnl As Panel = cv.GetPanel(i)
    Dim chk As CheckBox = pnl.GetView(0)
    If chk.Checked Then
        L.Add(i)
    End If
Next

LucaMs · Sep 11, 2015

I used your routines in the attached project and it works.

Maybe your cv is not in the Activity?

LucaMs · Sep 12, 2015

Perfect, now I have the same problem in my project.

If the CustomListView is created inside the Activity_Create, there is no problems with GetItemFromView called in the TextChanged event of an EditText added to a custom item.
If it is created after the Activity_Create is completed (pressing a button, for example) the TextChanged event will raise during the creation of the CustomListView and GetItemFromView gets a null parent.

[My CLV is not added using the Designer]

LucaMs · Sep 12, 2015

LucaMs said:
Perfect, now I have the same problem in my project.

If the CustomListView is created inside the Activity_Create, there is no problems with GetItemFromView called in the TextChanged event of an EditText added to a custom item.
If it is created after the Activity_Create is completed (pressing a button, for example) the TextChanged event will raise during the creation of the CustomListView and GetItemFromView gets a null parent.

[My CLV is not added using the Designer]

[solved]
Setting the properties of the EditText after the addition of the "item panel" to the CLV, I get no errors.

saeed10051 · Dec 15, 2015

Informatix said:
My mistake. I forgot to mention that you need the latest Reflection library.

could you please give me a link to the documentation realated to your list class. Actually I am looking for a list view which can hold name and small picture of the person. something similar to contacts list
Regards
Saeed

xor83 · Dec 23, 2015

Can I set "SetElevation" to each list item? Can anyone share some idea to do that? I tried adding SetElevation to panel but did not worked. Any help?

Erel · Dec 23, 2015

It should work. Please start a new thread for this and post the code that is now working for you.

Erel · Feb 10, 2016

V1.20 was uploaded to the first post. This version includes better designer support (requires B4A v5.80).

ronovar · Feb 20, 2016

How can i update items in panel?

For example: i have 300 items in clvMaster list and when apk start it fills 300 items in clvMaster using:

B4X:

clvMaster.InsertAt(ScrolledChannel, CreateChannelListMaster(ScrolledChannel, clvMasterCh.AsView.Width, 167dip, Channels(ScrolledChannel,3), Channels(ScrolledChannel,2), EPGs(ScrolledChannel,0), EPGs(ScrolledChannel,1), EPGs(ScrolledChannel,2), EPGs(ScrolledChannel,3)), 167dip, ScrolledChannel)

That works great...i have the following labels in each panel:

B4X:

'UPDATE - EPG
lblEPGName.Text  = EPGs(ScrolledChannel,0)
lblEPGStart.Text = EPGs(ScrolledChannel,1).SubString2(11, 16)
lblEPGStop.Text  = EPGs(ScrolledChannel,2).SubString2(11, 16)
lblEPGDesc.Text  = EPGs(ScrolledChannel,3)

I have tried using removeitemat and insertitem at but i have duplicate panels, and would like to avoid this...can be added in this excellent class function:

B4X:

Sub UpdateItemsAtPanel(Index As Int, Pnl As Panel, ItemHeight As Int, Value As Object, lblEPGName, lblEPGStart, lblEPGStop, lblEPGDesc As String)
   'UPDATE - EPG
   panel(index).lblEPGName.Text  = lblEPGName
   panel(index).lblEPGStart.Text   = lblEPGStart
   panel(index).lblEPGStop.Text    = lblEPGStart
   panel(index).lblEPGDesc.Text    = lblEPGDesc
End Sub

So the idea is to not remove existing panels in list witch is generated at apk start, only to update labels in existing panels at index....can erel or someone posto here code how to do that with this excellent class?

Erel · Feb 21, 2016

Please start a new thread for this question.

jazzzzzzz · Feb 22, 2016

how can i download version prior to b4a 5.8?

Erel · Feb 22, 2016

This is not the correct place for this question.

jazzzzzzz · Feb 22, 2016

Erel said:
This is not the correct place for this question.

Am not asking about buying 5.8 ,am asking about the library version (customlistview) that support below 5.8 IDE

Erel · Feb 22, 2016

I see. V1.10 is attached.

jtare · Feb 25, 2016

which is the right way to set the item height?
I tried this:
change from original 100dip item height to 200dip itemheight when the user click the item
but I get an error

B4X:

Sub clv2_ItemClick(Index As Int, Value As Object)
    Dim pnlnew As Panel
    Dim newvalue As Object
    newvalue = Value
    pnlnew= clv2.GetPanel(Index)
    clv2.RemoveAt(Index)
    clv2.InsertAt(Index,pnlnew,200dip,newvalue)
    Log(Index & " = " & Value)
End Sub

then I tried this and it worked:

B4X:

Sub clv2_ItemClick(Index As Int, Value As Object)
    Dim newvalue As Object
    newvalue = Value
    pnlnew= clv2.GetPanel(Index)
    clv2.RemoveAt(Index)
    clv2.InsertAt(Index,CreateListItem($"Item #${Index+1}"$, clv2.AsView.Width, 100dip),200dip,newvalue)
    Log(Index & " = " & Value)
End Sub

Is there a way to only change the item height without deleting and adding the same item?

Erel · Feb 26, 2016

Please start a new thread for this in the questions forum and post the error message you got with the first code snippet.

PABLO2013 · Mar 17, 2016

regards
can you help me
I wanted to know how they could correct this mistake, what I want is to know the panel that contains the view and modify the contents of the text view that the same panel , thanks

mtselection · Mar 23, 2016

Hi,

I can work with array of clv?
When I try to add a panel in the CLV(2) I have the Sub Asview error:
java.lang.NullPointerException: Attempt to read from field 'int android.view.ViewGroup$LayoutParams.width' on a null object reference

I can know the CLV panel position with the method javaobject?
similar to jo.RunMethod("getFirstVisiblePosition", Null) for listview.

thanks

Erel · Mar 23, 2016

Please start a new thread for this question.

rscheel · Mar 28, 2016

Consultation CustomListView and I scrollview, it is that when the screen is not broken can use the scroll of CustomListView of scrollview only is the activity, which is not error, any idea.

CustomListView - A flexible list based on ScrollView

Expert

Expert

Attachments

Expert

Expert

Active Member

Member

B4X founder

B4X founder

Active Member

B4X founder

Active Member

B4X founder

Active Member

B4X founder

Attachments

Active Member

B4X founder

Well-Known Member

Attachments

Member

B4X founder

Well-Known Member

Privacy & Transparency

Privacy & Transparency